WASHINGTON D.C.—Secretary of State Hillary Clinton was hospitalized on Sunday, December 30, after doctors discovered she had a blood clot after a follow-up exam related to a concussion she suffered this month.

Secretary of State Hillary Clinton. Photo courtesy of the U.S. Department of State.

It was announced on Monday, December 31, that Clinton's blood clot was located in her head between the brain and the skull behind her right ear. The clot, called a right transverse sinus venous thrombosis, did not result in any stroke or neurological damage. She was treated with blood thinners to help dissolve the clot and she will be released once the medical dose has been established.

"In all other aspects of her recovery, the secretary is making excellent progress and we are confident she will make a full recovery. She is in good spirits, engaging with her doctors, her family, and her staff," said Clinton's doctors.

Earlier this month, Clinton suffered from a stomach virus when she fainted from dehydration, which caused her concussion. Clinton spent the holidays with her family last week after working from home.

She was scheduled to go back to work at the State Department this week. However, due to her illness she was not able to testify on December 20 before the House Foreign Affairs Committee on the deadly attack on the U.S. Consulate in Benghazi, Libya. She was replaced by deputies Thomas Nides and Bill Burns.

Clinton, 65, has had over 400 days and nearly a million miles of travel as secretary of state. She plans to step down from the post when Senator John Kerry, President Barack Obama's choice to replace her, is confirmed by the Senate.